Henderson admittedly is a bit perplexed as to why the brash and outspoken Sonnen has cut to the front of the line, got the “TUF 17″ assignment, and been promised a title shot in a division in which he doesn’t own a single UFC win.

So he went to Twitter and posted a message that included UFC President Dana White’s Twitter handle.

“I guess I should just quit training to win fights and to be exciting for the fans and just go to s— talking school,” he tweeted.

Even before the title shot went to Sonnen, Henderson had essentially lost his once-promised title fight. With the former PRIDE and Strikeforce champion on the mend after tearing his MCL training for the UFC 151 fight, White said this past month that he expected Henderson (29-8 MMA, 6-2 UFC) to next fight Machida (18-3 MMA, 10-3 UFC) . Actually, it was part of a rant in which the UFC boss criticized Machida for not taking a short-notice opportunity against Jones at UFC 152.

“So you wanted to fight Jon Jones, you climbed up to the title fight, and you don’t take it,” White said of Machida. “Now you’re fighting [expletive] Dan Henderson. Now you might not even get to the [expletive] title again. You lose to Dan Henderson, you’re not anywhere near Jon Jones.”

Although Henderson initially hoped to return to the cage by year’s end, the UFC’s remaining 2012 schedule is already full of top-level fights, so it’ll likely be 2013 before we see him, possibly against Machida.

Either way, it’s been nearly a year since his most recent octagon appearance; in a “Fight of the Year” winner, he took a decision win over ex-champ Mauricio “Shogun” Rua at UFC 139. (You know, the one that earned him that title shot.)

As the UFC 189 tour made its last stop in Dublin, featherweight champ Jose Aldo was met with a torrent of abuse from the Irish fans. It might have been unpleasant, but it might also have been just what he needed.